Não informado. (1977). Current problems in obstetrics and gynecology. Year Book Medical Publishers.
Style de citation Chicago (17e éd.)Não informado. Current Problems in Obstetrics and Gynecology. Chicago, Ill: Year Book Medical Publishers, 1977.
Style de citation MLA (8e éd.)Não informado. Current Problems in Obstetrics and Gynecology. Year Book Medical Publishers, 1977.
Attention : ces citations peuvent ne pas être correctes à 100%.